I guess since the last update ENPASS is blocking sometimes the wireless keyboard from Logitech (mouse is working fine) using Firefox and / or MS Office.
Firefox states that I should stop ENPASS. Doing so everthing is working fine.
With MS Office your only chance is to wait for min. a minute or so. Closing ENPASS everything ist fine!
System is W 11 21H2, MS OFFICE 2019
Any ideas?